CVE-2018-6917 Information

Description

In FreeBSD before 11.1-STABLE 11.1-RELEASE-p9 10.4-STABLE 10.4-RELEASE-p8 and 10.3-RELEASE-p28 insufficient validation of user-provided font parameters can result in an integer overflow leading to the use of arbitrary kernel memory as glyph data. Unprivileged users may be able to access privileged kernel data.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

http://www.securityfocus.com/bid/103668 http://www.securitytracker.com/id/1040629 https://security.FreeBSD.org/advisories/FreeBSD-SA-18:04.vt.asc

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5